Engine.



E. V. SALA.

ENGINE, APPLICATION HLED APR.:2.19|5.

Patented Maylll, 1918 5 SHEETS-SHEET l.

INVENTOR MMA WITN SSES Ogg@ E V. SALA.

MEINE, APPLICATIUN HL'ED APH. l2. 1915.

Patented May 14, 1918.

5 SHEEIS-SHEEI 2.

INVEN'TO WITNESSES E. V. SALA.

ENGINE. APPucATloN man APR. l2. 1915.

` Patented May14,1918.

5 SHEETS-SHEET 3.

INVENTOR WITNESSES Mx 76.

7 @maw E. V. SALA.

ENGINE. APPUCANON FILED APR. 12. |915.

Patented May14, 1918.

5 SHEETS-SHEE 4.

@assis cf' NVENTOR Patented May 14,

INVENTOR E. V. SALA.

ENGINE. APFLICAUON min APRA l2. Isls.

rv C) Efim l' of the engine.

asf'Y r the perf ENGINE.

OHIO

Bpeeication cf Letters Patent. A'pplioation led April 12, 1915. Serial No.

ATo all whom z't may concern.' i'

` Be it known that I, EAnL V. SALA, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a certain new and useful Engine; and I do hereby declare the following to be a full, clear, and exact description of the invention,`snch as will enuble others skilled in nppertains to make and use th ence bein had to the-accompanying drawings, if to the characters of reference marked thereon, which form a part of this specification.

y invention relates tion engines andit, has vde an' engine which low cost of production and yet one which is exceedingly efficient and number of movable parts. hns for its object ning en h th wherein the roducts of the comin be complete y disfcharged at th amount of loss l Patented May 14, 1918. 20,770.

y be

formed 1n partsof' ditional area i'naj passa eways or tie e beth.

to internal combusfor its object to promay be made at a ed tov my invention the fri is greatly reduced.

heinvention may be contained in many forms' of .engines usable for different purposes, all of which come within the purview of my claims hereinafter appended. show the ention, I

a minimurm y ction between the parts ,Z 5 nd lstion may e minimum energy in the operation y invention a means is provided for opening the passa burnt gases to their )i m rapif ly fuel and ,Figure 1 is a vertical, secshown nken on the line 3-3, Fig. 4 isa top view per mrt of the engine. Fig. 5 Y illustrates msi( e viewof the upper part of the cylinder casing showing the manifolds, heatedby the heat connected with the engine Figs. 6, 7, 8 and, consequently, and tifillnstrate 'cal'and which theejeeted th Y oonventom-nl way hrough the enf pr ucts pass are correspondingly cooled.- gine showing the relative positionsof the. lAlso by my invention means is provided for pistons to the ports and passageway, in the sealing the cylinder during the compression cyclic operations of the engine. "T215: gm power strokes fr om any possible leak- 1, 2, 3 and 4 indicate engine elements, that y my mventlon springs are is, the parts ofthe exigirle which coperatey n the operation of the gates to drive the crankshaft. They' form what closing devices for closing the 1s known in the art, as a four-cylinder jourports and pussageways leadm to and from cycle engine. the cylinders of the engine an consequently .he engine is provided with a casing4 10 there 1s but httleloss of energly in the opwhich is common to all of the elements eration of the valves against t e springs 1nA ox'mance of the engine. Also, by

rducts tdiassagewuys t rough of the exhaustV 'or' valves or mclosing `the crank shaft and pistonrods. `10.15

. extend well within '38 are so located as to extend below the upwhich is bolted to the cylinder' casing 12 and thc lower portion 13 which is bolted to the portion 11. The lower casing 13 may be provided with a suitable drain plug 14.

The lower casing 10 is provided with a crank sha-ft 15 which extends between the parts 11. and 13 land is ,supported in suitable bearings 16. The piston rods 17 are connected to the crank shaft 15 and to the pistons 21, 22, 23 and 24. The pistons are provided with the rings 19 which seal the interior of the cylinder from leakage during times of the explosion and the compression. The cylinder casing 12 is provided with a suitable jacket having the chamber 18 for ycontaining water or other cooling medium for reducing the temperature of the engine. The pistons iuoye in sleeves or cylinders 31, 32, 33 and 34 which are located within the casing 12 ot' the engine. The cylinders are longitudinally movable in the engine casing 1 2. T hey are positively operated by the crank sh'ait of the engine or by some other ini-ans which will synchronously operate the cylinders with respect to ihe movements of the piston. The cylinders may be driven by a sprocket gear 25 located on the crunk shaft 15. The crank shaft 15 is connected to a crank shaft 26 by means of a sprocket chain 27 and a sprocket gear 28. The crank shaft 26 is` connected to whip rods 35 which are connected to airs of ears or bifurcated arms 36 extending from the cylinders 31, 32, 33 and 34. The crank shaft 26 is supported in bearings 29 at the ends of the casing 10. The cylinders are provided with ports andthe engine casing is provided with passageways for controlling` the flow of the fuel and burnt gases of the engine. The connections between the pistons of the engine and the cylinders are such that they move in a two-to-one relation, that is, the pistons make two strokes in a given direction, while the cylinders make a short single stroke. The strokes oi the cylinders are such that they quickly open the passageways of the engine to their widest extent and quickly close them while the pistons are performing their operations in the cycles 'of the engine elements.

The cylinders 31, 32, 33 and 34 extend to near the top'of th'e casing. The casing is provided with caps 37 whichare bolted at thev top of the engine. They extend down into the casin 12 forming heads 38 which the cylinders. Theheads per edges of the cylinders when they are at their lowermost positions in the operations of the crank shaft 26. An annular pocket 39 is thus formed between the heads 38 Yand the casing 12 in which the cylinders 31 mav slide. The` heads 38 are provided, Wit jacket chambers 45 which communicate with the jacket chambers 18 in the casing for iways which keeping the heads 38 cool. The heads 38 are provided with passngeways 41, 42, 43 and 44 i'or the burnt gases and also passagewuys 51, 52, 53 and 54 which communicate with the fuel supply of the-engine. The passageway/.s of-one kind are separated from the passagcwnys of thc other kind by webs 46 which are formed in the heads 38. The lower ends of the heads 38 terminate in explosion or combustion spaces 47. The

lower ends of thc heads 38 are provided with packing rings 4,8 ,which seal the engine from leakage. The water chambers' 45 extend through the passageways located at the sides of the head and Vthe side of the webs 13 and into the loweiend of the head. The ignition plugs 56 are heads and extend into the explosion space 47 whereby the explosive charges are ignited at the beginning of the power stroke in the manner wr-ll known in the art. The plugs :3G extend into pockets 57 und through the lower end of the head 38. their terminals extending into lhc explosion space formed in the lower end of the head 38.

The passngjenns ll. 4:1., l?, und 44 and the irnissngeways fil to ."i-l which communicate respectively, with the exhaust und intake manifolds of the engine, arecontrolled by the movable cylinders 31, 32, 33 and 34, respectively.

inserted in thel The openings 61, 62,.'63 and 64, formed in the cylinders, are adapted to the pair in which cach cylinder is coupled` or associated. The arrangement niav be such that the openings or ports 61 to 6i will register with thc pnssngewnys 41 to 44 on one side of the webs 4G when thil sleeves have completed one movement and to register with the pssageways 51 to 54. on tlnl op osite sides of thc webs 46 when theA cvlin ers have completed their opposite n'ioi'ement. In the constructionishown the cylinders in moving 180 as'nieiisured in thc circles of the crank pins to'which they are connected, move so as to completely open either set of passageways to nient controlled by `them.

The cylinders or with openings which permit the Vgases' to pass into and out of them to drive the enthe cylinders.

ine pistons and to exhaust he orts or openings 71, 72, 73 and 74 permit the gases to enter and exhaust frein the cylinders from and through the passageways formd'in the heads of the associated engine, elements. .By this means the passageways leading to each 1engine element from the source of fuel supply and the passagelead to the exhaust The openingsl the rengine elei which it is n direct communication leading to and from element 2 to the engine element 1, l

,connect between '1n advance `lita Y they .auch that-it be gine, from each engine element are controlled by the movements of two cylinders, that is, one set of openings 1n. the cylinders control the direct communication etween t e entgine elements and the manifolds while pash are subject to the control o the rst set of o enings. The second .set o openings contro `the passageways which d from the engine element of the pair 1n associated, which :controls the the exhaust and intake of the en ine.

e passageways 81, 82, 83 an 84 interthe engines in pairs. passageway 81 leads from the exhaust and passageways 42 and 52 of same manner.

he passageways in the engine which conduct the ex losive mixtures and the produ cts of com nstion toand from the explomanon spaces of t.e engine may be greatlv suit` various conditions, h as to manufacture and as to utility of the engine. Also the-spaces for condnctin f the cooling liquids may be greatly varier. What have shownowever, may skilled in the a A The 'openings 71 of the` sleeve the connection 81 leading from the passage- Wavs 42`and 52, while the mssageways 42 and 52 are controlled b v th The intake yof 'the charging gas and the exhaust Vof the products of con'ibustion of e en 'ne element 1 is thus dependent. upon, Digi, the movements of the cylinder 31, the movements of the cylinder 32.- Y e openings I1 to 74 are so located in the -sleeve's 31 to 34, respectively, as to Tic 200 `of .the opening of.. the intake @reageeraysoi.4 the engi ne elements of--wh-ich orm a part, that is, the opening 71 is .gins to open the passa'gewav advance of the time in which be greatly modified by those I'.

the opening (i1-opens the intake passageway 56 451 located in opening 71 is of such size and cylinder 31 :that the pasbehind the closing lso, the

the sageway 81 is closed 20 of the passageway 51. The opening erts of the exh being 180 the opening dports of the intakepassagewavs y ing of the intake illustrativo con. struction that contains my invention which.`

31 controls e opening,r 02.y

, movement, the

pins of the shaft 26 in advance -lng of the intake of the engine element' of the airs in which they are associated, that is, tlie opening 71 begins to open the pas- 110 in advance of the openpassagcway 52 of the engine cylinder 32 or 220 as measured in the circular movements of thc crank pin 01 ot the piston 21. The openings 71 to. 74, however, is after the openings of the cxiaust passageway, of the cylinders of the of the engine elements in `the assopairs, take, place, he opening 71 egms to open the passageway 81, 70 after the opening 62 of tl open the exhaust on the circle of th o as measured by t ments of the crank pin 91 ton 21 is connected.

eengine clenwnts are connected to the crank shaft at points 90 ahead of each other. The pistons of the engine elements are connected to the crank shafts so as to perform in a certain sequence the cyclic o)- erations of cach engine. elelnen.

cllanlber 42, as e crank pin 102, c circular moveto which the pisthe piston 21 moves the crank pm 91 from of the openxe cylinder 32 be-` the radial line Ato the radial line B. Mean.

time, the connection 81 is o en by the sleeve 31 which, as indicated by t e circular movements of the crank pin 101, passes from the radial line A to the radial line B and whe it reaches B the connection cylinder 32 has'also n moving :from a point measured o n the crank pin from the radial line A to the radial line B which time the intake passageway is from t c radial the intake passageway leading through the connection 81 .andth have been opcnedand, althol?h, during that its return, yet t el of the osive mixture passageways 52 and 81- which explosivev mixture from the the cylinder 3 1 until the comcut. off by the sleeve 31 which convey the manifold to munication is a correspon mg relation exists Between the occurs when the crank pnl 91 of the piston opening and closing of the ports tothe inmoves across the ladial line B. yItthus teriorso the c vhndersahove the pistons. as an intake, in `thisconstruetiom while Ve openingen to 74 measured in the ci rcle described by the cr nk are located as' th e crank pins 91 to 94, are moving 220. As `the. 'crank pnjof the piston 21 moves 81 is closed. The

los

' traversed 'another 90 from the rndial line A to the radial line B, the port 61 is open and closes when the crank pin reaches the radial line B, although thc opcnin 52,

which communicates with the nieniiio d leading from theearbureter, is opened until the crank pin reaches the radial line A, C. During the time of the movement of the crank pin. from the radial line B to the radial line A, C, the piston 2l is compressing. Shortly after the movement o the crank )in through the radial line A, (j, the explosion takes place and drives the piston until lthe crank pin passes through the radial line D. When it passes through the radial line D the port 7l. opens the connection 8l. The exhaust port 42 however, hns by this time been opened and was opened when the crank in 91. passed the radial line A, C, naine y, when the crsnlr pin et the sleeve 3l is at C. While the crank pin ill connected to the piston 2l passes across the rndiel line D to the radial line A the port Tl is open and also the exhnust peri' i2 open, whereby the products of coinlnlstion pass mit through the ports 7l sind 62 through the exhaust passageway i2. The exhaust ports of the engine are thus opened while the. crank pins 91 to 9i de scribe 220@ in the construction described. When the crank pin -91 passes through the radial line A-C the port G1 again begins to open the passageway 52 and the gases begin to pass in through the ports 7l. The `ges continues to pass in to the cylinder 31 as before notwithstanding the fact that the pistonv 21 luis begun to return in the sleeve 3l owing to the vaenous condition produced in the sleeve lv the outward movement of the piston.

The same cycle of operations is performed by the other engine elements which are thus internelated in pairs, the sequential operations of the engine elements 1, 3, 4, 2 being in the order enumerated and 90C apart. The saine angular relation existing between the ports of each sleeve in their opening and closing-throughout lthe engine elements, there is also a uniform corresponding anula'r relation of the po'rts of the sleeves o theengines'of thev associated pairs so that all of the engine elements will perform the seme operation as described in connection with the engine elements' l and 2. f

In Fig. 8 is shown the position of the valves when the piston 21 hes performed a half turn showin definitely the location of the sleeve 32 'which shows segewey wide open, the pin 101 having moved 90. The port 61 will be closedwhen the crank pin 91'` passes through the radial line B, although the intake passageway will not be closed until the crank pin O2 has i In Fig. 9 is shown the next step in the operation of the engine, namely, 102 has passed to the closing line and the crunk the intake p aspin 91 has passed t0 the radial line A-C while the port 71 is still closed und the exhaust passageway 42 is about to open. The explosion takes place in the cyl inder 3l and the piston 21 is driven down und while being cnrried down the exhaust passageway 42 is being opened to near its widest aren. When the. crank pin 91 passes through the lradial line D, the port (31 begins to open and widely o )ens while the crunk pin Jl is passing un er the center of the sheft, namely, from the radial line D to the radial line B, as shown in Fig. 6, allowingr practically the whole of the exhaustin prodA nets to escape. The communication t irough the pipe 8l romains established until the crunk pin 91. passes through the radial line A-(l. nnmely, the top center. Whereupoin the intake [nissagmi'ay begins to open as shown in Fi .7.

The pnssngewnys L)El to 4l and 51 to 54 nro comici-led to the manifolds (i5 and (37. The exhaust nmniiold. G5 is secured to the raising l2 by menus oi' the bolts {Si} while the manifold (i7 for the explosive mixtures nrc scoured lo the cus-ing l' by Ineens of the bolts (Sti. 'lhe manifolds cross each other between the eonnnunicuting pussegeways which lend to the two adjoining central engine elements und the pussagewnys which leed to the end engine elements. The manifolds 65 and 67 could be located in parallel relation but to )roduce u uniiorm height of the engine elements and permit the seine degree of relationship between the ports of each sleeve, tlul manifolds are preferably crossed in the nninner shown in Fig. 5. By this arrangement the structure of the engine is greatly simplied which greatly reduces the cost of construction.

The degrees at which the ports may be opened and consequently degrees at which communication through the passageways are established relative to the movements of the crank pins of the engine may be greatly varied whereby the periods during which the ports remain open and the passa eways are established may be greatly a tere either iiicreased or diminished as may be desired. By this means,the perio. s of intake and the pcriods of exhaust and the periods of the cornpression or drivin fiction may he'relatively changed end varie as may be desire The independence of relative location of the orts ,of the engine cylinders gives opportunity for variation of the timing o the engine with reference to the cycle of operations o the engine. By this ineens the engine may he so mede as to meet the ver-'ions conditions requisite in the commercial world; If is power engine, a stationary type, it may be readily altered into a six-cycle engine whereb the intermediate eening step of c1 the cylinders by passing air or other gas for :,aeama n y be performed, The 1combination of a pair of movable cooling or other purposes m l as, intermed products of comb the explosive mixt to produce a hig may be readily vari in their sizes so as to e in advance of a l -exhaust of the nd the intake of ures. Also, if it is desired h s eed engi in their location and xpel the exhaust gases peed` engine.

and dilerent resu ding to which wil b amed accor e colditions to which most beneficial un the engine is to be Subj aving thus described m I invention, what w` and desire t o secure by Lety ters Patent, i

and a shell, th two relation wit shell having a hea the "head ha ination of a piston, a cylinder inder movable in a onetohe piston, the into the cylinpassageways fo the engine having g with the interior osion chamber and ssageways, the cylinly opening and geways and a g the second- -and out of the cylin er. respect to t d extending communicatin passageway at the expl of the shell with the first der having po the first-named passa r opening and closi named passageway.

` ination of a cas ing a pluers, and a plurali t of pistons each cy inder havtrolling the haust gases o -ports for controllin -named ports y rality of cylind located in tile ing a rt or of the Iiiiel and ex der and sub s controlled by the first other cylinders.

he combination of a casi plurality of ers, each cylinder ng the liow of theto' another 'of the tons located in the g a port for controlli and fuel gases cylinders and each cylin for controlli passageways contro ed by an t on of a pluders, istons movable -cylin geways lleading to Inch it is associated lling the iiow of gases named cylinder.

pistons located heads extending s having assageways for e cylinders havcyhnders, pistons located in the cyliiiders heads located in the cylinders, each hea having passageways, one for the fuel and the ot er for the exhaust gas f the cqiider, other than the one in which the cad is located, the cylinder in which the head is located having a port for alternately openi and closing the passageway.

he combination of a pair, of movable 76 cylinders, pistons located in the cylinders heads located in the cylinders each head avmg passageways one for 'e fuel and the other for t exhaust gas o f the cylinder other .than the one in which the 80 head is located the cylinder in which the headis located having a port for alternately opening and closing the passagewa and a port for controllin'gdthe How of th bid into 8. The combination of a pair of movable cylinders, pistons located in the cylinders heads 'located in the cylinders, each hea havin passageways, one for the fuel gas and t e other for the exhaust gas of the cylinder other than the one in which the head is located, the cylinder in which the head is located `having a port for alternately opening and closing the passageway, and a port for controllin the flow of the uid into 05 and out of the cylinder, the head rovided with passageways for a coolin meium.

In an engine, the combination of a source of fuel supply for the said engine, a movable cylinder and a iston, the engine head extending into the cyllinder and havin a passageway communlcating with the source if fuel supply, the cyllndervhavin ports, one located in operative relation wit the passa eway inthe head and the other located be ow the head for controlling the exhaust and the intake of the cylinder.

In an engine, the combination of a.`

source of fuel su ply, a means for conduct ing away the ex aust products of the engine, a movable c linder and a iston, the f engine head extending into Ythe cy 'ndez'. and having two passageways, one oommunlcating with the source of fuel supply and the other communicating .with the meansjor conveying away the exhaust products` of combustion, the cylinder having a port' for controlling the said passageways and another port or permitting the fue to enter the cylinder and exhaust products to be drawn from the cylinder.

11. In an engine, the combination of a pair of elements having valve members and pistons, eachsvalve member having a means for controlling the intake and exhaust gases 1,25

its own intake and exhaust gases which are .mg ports for contro ways and ports for trolling,l the llowof f the gases into and o f the cylinders.

ontrolled b the other valve member.

12.111 an'yengine, the combination of a 1.80

"the passageway of mir oi' movable cylinders, pistons located fn the cylinders, the engine havin two pasM sngcways, one Jfor the fuel 'gais an the other for thc exhaust gas of the cylinders, and two passagcways connecting thc lirst two passageway/s to the combustion chambers of the en ine, the cylinders having' ports, one ort o each cylinder for alternctel esta ishingf communication between the rst tw o pessagcnnys land onooi" the lest named pesysapgeu'ays7 and cach cylinder having n port for establishing communication between the one of ythc lest named. passagevvays and thc combustion chamber of the engine.

13. 1n an engine, theconibination of n pair of movable cylinders, `listens located in the cylinders, the engine niving two pas sngcivays, one ior the fuel gas end the otheiI for the exhaust gas of (lio, cylinders of the engine7 and twi, pnssugeways connecting the {inzt two paesageways to thc combustion flmfnln-rs of the cylinrlerf-f, the cylinders hav ing polls. uw pori ol' lan-ll iilin'irfi 'for esA lili hiiilinliingg; coinmnniraliwn between one the lam nnnml |fi--v -f\fv\\a}f9 imi 'fle f'onilinstion chanihi-n and each cvlinllcr having a pori; for alternately establishing communication between the first tivo passageu'eys and y the last mined passage ways which communicates with the combustion chamber oi' the other cylinder.

luf-l. ln an engine., the combination of :i pziir of movable cylinders, pistons located in the cylinders, the engine having two passageways, one for the incl and the other for the exhaust gas of the cylinders of the engine, und 'tivo passagen'nys connecting the first tivo passageway?, to the combustion chambers oi the cylinders, the cylinders having ports, one port of each cylinder for cylinders, the casing having a plurality of assageways for the fuel gases, and a plurality of assageways for the exhaust gases, cach cylin er having a port for controlling the seid passageways, each cylinde' also having 70 n port forcontrolling the gases entering and leaving thc cylinder, e passegewn for con nccting the interior of' the cylin er to the first named passageways.

17. In en engine the combination of e pair of elements, each element comprising a pisinn, and an inclosing shell, each element having two passageways one for the intake and the other for the exhaust gases, and a thirll passageway named passa gewziys, sind the explosion chamber of the other element` two movable bodies each movable lioilv i'or opening sind closingy the third pnssnge "ay and the other mov able body for opening nnfl closing the com' g5 ninnication between the (irst two numeri pas sagcways alternately uitli the third naineil passa ewey.

18. n an engine the combin-.ition of a pair mi engine elements'. ein-li comprising and a movable piston, each element having two passageway-"s, one for the intake und the other for the exhaust gases, the engine having n pair of pnssagcways each for connecting element to the explosion chamber of the other element. each element having a movable body, one movable body for openinu and closing the connection between one o the second named passageways two named pnssegeways of the element'with which the movable body is associated and for opening and closing the connection of the other of the second named passageways with connininiceting with the irs'ri 80 :i shell en the first two named passageways of one and the iii-st 10o the interior of the shell with 'which the mov- 105 able body is associated.

19. ln an engine havin a. pair of elements each comprising a movale valve member, a piston. and a shell, each shell having two pas- Segeweys one for exhaust and the other for intake gases of each engine element, two passegevvays, each of the last named passegevvays connecting the first two naine passegeways with the explosion chamber of the J.shell of the other engine element, each' 115 valve member for opening end closing the ends of the second named pair of passageways.

Q0. In an engine having c pair of elements each comprising siniovable valvememf bei', a piston and a shell, each shell having two passa eways one for exhmist end the other for intake gases of euch engine element, two passcgeways, each of the lest named passegeways connecting the first two 125 named passageways with the explosion chamber of the shell of the other engine element, each valve member for opening and closing the ends of the second 4named. pair of pessageweys, each valve member for opening 1:90

establishing communication between one of the lust nnmed pnssagewsys and its combosv lion olnimber. and Unch cylinder having n port for alternately establishing communi cation between the first two passageways and the .passageway of the last named passegr-,ways which communicates with ,the combustion chamber of the other cylinder, while the communication is establis ed bc tween one of thetwo last named passage- Wnys and the other cylinder ofthe engine. 15. The combination' of a piston, a. movablecylinder and a shell, the shell having e head extending into the cylinder, the head having pa ssagevvays `for the fuel and exhaust gases, the engine having a passagewayicominnnicntingi with the interior of the sh ll et the explosion chamber, the cylinder having orte for alternately opening and closing the rst-named passageways and a port for opening und closing the second-named passage- 16. The combination of a casing, a lurality of movable cylindersl located in t e eas ing,` a plurality of pistonsmovable in the the exhaust passageway of its associated engine element while the other valve member chamber of the engine ment with which it is associated and for 0 ening the intake passageway of the engine element with which it is associated while the other valve member closes the explosion chamber of the engine element with which it is associated.

n an engine having a pair of ele- :ments each comprising a movable valve member, a piston and a shell, each shell having two passagcways one for exhaust and the other foi-,intake gases o eac engine element, two passageways, each of the last named passageways connecting the first two named passageways with the explosion chamber of the shell of the other engine element, each valve member for opening` and e osing the ends of the second named pair of passagewalvs, a packing ring located intermediate the first named passageways and the explosion chamber of each engine element.

22. The con'ihination of a casing, having a pair of engine elements, each engine element harinar a piston and a valve member, the 'asing having controlled by the valve members, for controlling the exhaust and eatingr with the exhaust and intake ports controlled b v the other valve member.

Q3. he combination of a casing, having a pair of engine elements, each engine element having a piston and a valve member, the casing havingY a plurality of ports controlled by the valve members, each valve member for controlling the exhaust and the 40 intake portlof the engine elementother than the one with which valve member controlling a port communieating with the intake ports and with the explosion chamber of the engine element with which the valve member is associated.

24. ln an engine the combination of a pair of pistons, a valve member associated with each piston, each valve member having :n means for controlling.,r thc intake and exhaust gases. and means enacting;r with the first named means for controllingr the intake and iaust gases for each piston which are controlled by the member associated with the other piston.

In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

EARL V. SALA. W'i tnesses F. E. AUL, M. H. MAYERS. 

